<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
            <div class="button-wrapper">
              <div class="button">{{this.$store.state.city}}</div>
            </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
            <div class="button-wrapper" v-for="item of hot" :key="item.id"
            @click="handleCityClick(item.name)">
              <div class="button">{{item.name}}</div>
            </div>
        </div>
      </div>

      <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <ul class="item-list">
            <li class="item border-bottom" v-for="innerItem of item" :key="innerItem.id"
            @click="handleCityClick(innerItem.name)">
              {{innerItem.name}}
            </li>
        </ul>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
  name:'CityList',
  props:{
    hot:Array,
    cities:Object,
    letter:String
  },
  methods: {
    handleCityClick (city) {
      this.$store.dispatch('changeCity',city)
      this.$router.push('/')
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }

}
</script>

<style lang="stylus" scoped>
.border-topbottom
  &:before
    border-color #cccccc
  &:after
    border-color #cccccc
.border-bottom
  &:before
    border-color #cccccc
.list
  overflow hidden
  position absolute
  top 1.59rem
  left 0
  right 0
  bottom 0
  .title
    line-height .54rem
    background #eeeeee
    padding-left .25rem
    color #666
    font-size .26rem
  .button-list
    overflow hidden
    padding .1rem .6rem .1rem .1rem
    .button-wrapper
      float left
      width 33.33%
      .button
        text-align center
        padding .1rem 0
        margin .1rem
        border .02rem solid #cccccc
        border-radius .3rem
  .item-list
    line-height .76rem
    padding-left .3rem

</style>
